求翻译：机械力活化分子链，降低反应活化能，而使反应发生或促进反应进行，例如橡胶开炼时由于前后辊之间形成的速度梯度，产生对橡胶大分子的剪切力，降低大分子链断裂活化能。是什么意思？

Mechanical force to the activation of molecular chain, the lower the activation energy, so that the reaction occurred, or the promotion of the reaction, for example, the velocity gradient is formed between the before and after the roll rubber mixing, resulting in shear stress on the rubber macromole

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The mechanical power activated molecule chain, reduces the response activation energy, but causes the response to have or the promotion response carries on, because for example the rubber operates builds up time around between the roller to form the velocity gradient, produces to the rubber macro-mo

Mechano-activated molecular chains, reducing reaction activation energy, or facilitate the response brought about in reaction, such as rubber roll formed between before and after open chain due to the velocity gradient, shear force on the rubber molecules, reducing macromolecules strand activation e